Automatic valve for pumps.



No. 890,121. PATENTED JUNE 9, 1908. P. BRENNER & 0. HOFFMANN.

AUTOMATIC VALVE FOR PUMPS.

APPLICATION FILED DEC. 24, 1907.

2 SHEETS-SHEET 1.

i1; I if i Qwe a No. 890,121. PATENTED JUNE 9, 1908. P. BRENNER & 0.HOFFMANN.

AUTOMATIC VALVE FOR PUMPS.

APPLICATION FILED DEC. 24, 1907.

2 SHEETS-SHEET 2.

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PAUL BRENNER, OF DUSSELDORF, ANI) OTTO HOFFMANN, OF FREIBURG, GERMANY.

AUTOMATIC VALVE FOR PUIllIPS.

To all whom it may concern:

Be it known that we, PAUL BRENNER, Geibelstrasse 57., Dusseldorf, andOTTO HOFFMANN, Belforterstrasse 27, Freiburg, Germany, subjects of theGerman Emperor, have invented a new and useful Automatic Valve forPumps, of which the following is a full and complete specification.

The subject of the present invention is an automatic valve for plungerpumps, blast fans and compressors and which is specially suited foremployment in highspeed pumps.

In the accompanying drawings: Figure 1 is a cross section through ourimproved valve; Figs. 28, and Fig. 10 are similar sections throughmodifications thereof; Figs. 9 and 1 1 are plan views, partly brokenaway, of the valves shown in Figs. 8 and 10, respectively, and Figs.Band 13 are cross sections through further modifications of the valve.

The valve consists, as shown in Fig. 1, of a solid seat a and the dishedvalve body e of thin metal, hardened rubber or similar material, theedge of which rests on the seat at e The valve bodyincloses a. solid,immovable supporting surface or platform I), which is so arranged that,when the valve is closed, the bottom of'the val've bodyrests flat andthe pressure of the water or other liquid being pumped, is exerted onlyon a portion of the downward bent edge. The valve is opened by thepressure of the water &c., entering at (Z and lifting the key shapedvalve body from its seat a, while the bottom, which is in itself,elastic, affords a means of closing it. When the valve is open, thewater escapes at (1 between the surface of the seat a and the supportingplate (1, when it flows without changing its direction between the seata and the rim or edge e in every direction. The

rim of the valve body and the seat, may be counter sunk.

In the mode of construction as shown in Fig. 2, the valve body and thesupporting surface, are ring-shaped. The water &c., enters at theexterior periphery of the ring between a & b and is ejected between a &e towards the center of the ring.

The valve shown in Fig. 3, has two ring shaped valve bodies 0 andsupporting surfaces I). These parts are so connected that vSpecification of Letters Patent.- Application filed December 24., 1907.Serial No. 407.960.

Patented June 9, 1908.

their outer peripheries culminate at e, so obviating the necessity for asolid valve seat as each of the surfaces forms a seat for the other. Thetwo supporting surfaces 11 inclosed by the valve body are suitablyspaced by pegs, in order that the water &c., may pass.be

tween the two supporting surfaces and es cape between the two surfacese. Similar pairs of valves may be arranged one above another for thepurpose of affording greater facility for the passage of large volumesof water. 4 shows the union of two valves, as described in Fig. 2 withexterior influx and interior outflow.

In Fig. 5, a ring-shaped or annular valve 12, c, is shown, so that theliquid may escape along the inner and outer periphery of the annulus.

The valve shown in Fig. 6 with one ringshaped valve body 0, two ringshaped supporting surfaces band two rigid seats a, is a combined suctionand pressure valve. Key shaped and circular key-shaped valve bodies asrepresented in Fig. 6, and constructed of thin metal, hardened rubber&c., give only a relatively small valve opening, as the bottom is not soelastic.

In order to increase the elasticity, the bottoms of the valve bodies 0in the constructions shown in Fig. 7, are furnished with concentricribs.

In the valve shown in Figs. 8 & 9 the spring or elasticity is increasedthereby, that in the annular valve bodies 0, there are parts it out out,leaving only radial ribs g. These ribs 9 may be flat or sharp. Figs. 10,-11 & 12 show examples of the employment of this latter mode. These ribsmay, as shown in' Fig. 13, also be made to form springs.

In the case of the construction shown in Figs. 8 to 13, the annularvalve body 0 must be made to fit closely to the supporting lates at thecut away parts; if necessary it could be countersunk.

Having now fully described our invention, what we claim as new anddesire to secure by Letters Patent is:

11 A device of the character described, comprising a valve seat, aplatform s aced therefrom to form an intervening discharge slot, and adished valve body supported by the platform in its movement towards theseat, said valve body being so held as to be flexible in a portion ofits area which in seat ing' contacts With the platform, substantially asspecified.

2. A device of the character described;

comprising a valve seat, a support spaced therefrom to form anintervening discharge slot, a dished resilient valve body projectingmovably over the edge of the support, and means for securing said valvebody centrally to said support, substantially as specified.

Signed by,me at Dusseldorf this 11th day Signed by Mr. Hofimann atFreiburg Baden this 12th day of December, 1907.

. OTTO HOFFMANN. Witnesses:

Moiurz RAUPP, W. A. LEONARD

